Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Sumitomo Metal Mining Company, Ltd.

Ko Nozaki

Junta Izumi

Teruo Ishishita

Manabu Yamada

Kiyohito Machida

Hitoshi Sakai

Katsuya Kase

Satoru Suzuki

Hirofumi Iisaka

Takashi Kuzuya

Shigeki Kubo

Kenji Esaki

A battery charge/discharge control device () includes an input-enabled power adjustment unit () having an input-enabled current value calculation unit () and an input power limit value calculation unit (). The input-enabled current value calculation unit () uses a battery current value, a battery temperature value, and an estimated charge capacity value at the time 't' upon execution of detection, so as to obtain an input-enabled current value reduction amount per unit time during charge and an enabled current amount recovery amount per unit time when being left uncontrolled. Moreover, the input-enabled current value calculation unit () calculates an input-enabled current value I(t) to a battery () according to the previously calculated input-enabled current value I(t&#x2212;1) which has been calculated previously or the only initially set input-enabled current value The input power limit value calculation unit () calculates the battery input power limit value so that the input current limit target value obtained in accordance with the input-enabled current value I(t) is greater than an actual battery current value. Thus, the input-enabled power to the battery () is adjusted in accordance with the battery input power limit value.

Battery charge/discharge control device and hybrid vehicle using the same

A method of manufacturing a non-aqueous electrolyte secondary battery is provided wherein the positive electrode is made from a lithium-metal composite oxide represented by the general formula Li(Ni, Co)MO(0.98&#x2266;x&#x2266;1.10, 0.05&#x2266;y&#x2266;0.4, 0.01&#x2266;z&#x2266;0.2, in which M represents at least one element selected from the group consisting of Al, Mg, Mn, Ti, Fe, Cu, Zn and Ga), and having an average particle diameter of 5 &#x3bc;m to 10 &#x3bc;m a C-amount of 0.14 wt % or less measured by way of the high-frequency heating-IR absorption method, and a Karl Fischer moisture content of 0.2 wt % or less when heated to 180&#xb0; C. and the method comprising the steps of applying a paste of active material for positive electrode to electrode plate to make an electrode, then drying the electrode, and pressing and then installing the electrode in a battery, in a work atmosphere having an absolute moisture content of 10 g/mor less.

Active material for positive electrode for non-aqueous electrolyte secondary battery and method of manufacturing the same

To obtain an electric vehicle power supply 10 having a high output power density and regenerative power density, and which is compact and lightweight wherein a first battery 12 whose regenerative power density increases with decrease of the SOC and a second battery 14 whose output power density increases with increase of the SOC are used as an electrical storage device, and control is performed so that the SOC of the first battery 12 is maintained low while the SOC of the second battery 14 is maintained high. The regenerative power density of the first battery 12 is therefore high, the regeneration current from the motor 32 is mainly stored by the first battery 12, and the force used to drive the motor 32 is mainly output by the second battery 14 which has a high output power density.

Electric vehicle power supply

Growing community of inventors

Toyota, Japan

Ko Nozaki